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AURORKA [14]
3 years ago
15

HELP ME PLeaseee!!!!

Mathematics
2 answers:
Softa [21]3 years ago
6 0

Answer:

x= 8.5, 2x=17, (9x+5)=81.5

Step-by-step explanation:

since the sum of the interior angles of a triangle is 180 degrees, you must add all of the angles and set them equal 180:

2x + 2(9x+5) = 180

next distribute the 2 to 9x + 5.

2x + 18x + 10 = 180

next combine like terms (2x and 18x) and subtract 10 from 180.

20x = 170

finally, divide 170 by twenty.

\frac{20x = 170}{20}\\,x=8.5

the final answer is x=8.5

once x is determined, you can solve 2x and 9x+5.

2(8.5)=17\\\\9(8.5) +5 =81.5

Romashka-Z-Leto [24]3 years ago
3 0
6th of the term of 4th
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In a math class with 29 students, a test was given the same day that an assignment was due. There were 22 students who passed th
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4/29 is the probability that a student who did not complete the homework passed the test.

<u>Step-by-step explanation:</u>

It is given that,

There are 29 students in a math class.

Two types of students who passed the test and are not passed the test.

The other two types of students are who completed the assignment and did not complete the assignment.

So, the given data can be formed as a table.

  • There were 22 students who passed the test.
  • There were 20 students who completed the assignment.
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                                         Passed the test     Not passed the test    Total

Completed assignment        18                             -                             20

Not completed assignment   x                             -                                -

Total                                       22                           -                               29

Now, you need to find the probability that a student who did not complete the homework passed the test.

⇒ No.of students completed assignment passed the test / Total students.

<u>To find the no.of students completed assignment passed the test :</u>

Let 'x' is the no.of students completed assignment passed the test.

⇒ 18+x = 22

⇒ x = 22 - 18

⇒ x = 4

∴ P(students completed assignment passed the test) = 4 / 29.

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Step-by-step explanation:

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